diff --git a/sw_usb_audio/app_usb_aud_fosi_c1_v71/CMakeLists.txt b/sw_usb_audio/app_usb_aud_fosi_c1_v71/CMakeLists.txt
index 44255c7..ba12369 100644
--- a/sw_usb_audio/app_usb_aud_fosi_c1_v71/CMakeLists.txt
+++ b/sw_usb_audio/app_usb_aud_fosi_c1_v71/CMakeLists.txt
@@ -10,7 +10,7 @@ include(${CMAKE_CURRENT_LIST_DIR}/../deps.cmake)
 # 改动原因：版本号单点维护；FW_VERSION 用于 factory_/update_ 输出文件名（如 phaten_module_1.0.0.bin）
 set(BCD_DEVICE_J 1)
 set(BCD_DEVICE_M 0)
-set(BCD_DEVICE_N 0)
+set(BCD_DEVICE_N 1)
 set(FW_VERSION "${BCD_DEVICE_J}.${BCD_DEVICE_M}.${BCD_DEVICE_N}")
 
 set(SW_USB_VERSION                          -DBCD_DEVICE_J=${BCD_DEVICE_J}